Wedgwood Blue Jasperware Ashtray with Grape Vines

This little ashtray by Wedgwood is in a blue jasperware with raised grape vines around the rim. The ashtray measures about 3.5" in diameter. The bottom is incised Wedgwood Made in England 1954. There is also an undecipherable mark followed by an S. No damage. The color is actually a darker blue than it shows in the photo.